package com.sky.service.impl;

/**
 * @PROJECT_NAME:sky-take-out
 * @NAME: SetmalServiceImpl
 * @AUTHOR:$$
 * @Date:2023-08-14
 * @DESCRIPTION:
 **/

import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.ArrayList;
import java.util.List;

/**
 * 套餐业务实现
 */
@Service
@Slf4j
public class SetmalServiceImpl {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;

    public void saveWitDish(SetmealDTO setmealDTO){
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        //向套餐表插入数据
        setmealMapper.insert(setmeal);
        //获取生成的套餐id
        Long setmealId = setmeal.getId();

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
    }

    /**
     * 分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
       int pageNum = setmealPageQueryDTO.getPage();
       int pageSize = setmealPageQueryDTO.getPageSize();
        PageHelper.startPage(pageNum,pageSize);

        Page<SetmealVO> page =
                setmealMapper.pageQuery(setmealPageQueryDTO);
       // return new PageResult(page.getTota(),page.getResult());
        return new PageResult(page.getTotalPages(),page.getContent());
    }

    /**
     * 批量删除套餐
     * @param ids
     */
     public void deletrBatch(List<Long> ids){
        ids.forEach(id->{
            Setmeal setmeal = setmealMapper.getById(id);
            if (StatusConstant.ENABLE == setmeal.getStatus()){
                //起售中的套餐不能删除
                throw  new
                        DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);

            }
        });
        ids.forEach(setmealId->{
            //删除套餐表中的数据
            setmealMapper.deleteById(setmealId);
            //删除套餐菜品关系表中的数据
            setmealDishMapper.deleteBySetmealId(setmealId);
        });
     }

    /**
     * 根据id查询套餐和套餐菜品关系
     * @param id
     * @return
     */
     public SetmealVO getByIdWithDish(Long id){
         Setmeal setmeal = setmealMapper.getById(id);
         List<SetmealDish>setmealDishes=
                 setmealDishMapper.getBySetmealId(id);

         SetmealVO setmealVO = new SetmealVO();
         BeanUtils.copyProperties(setmeal,setmealVO);
         setmealVO.setSetmealDishes(setmealDishes);
         return setmealVO;
     }

    /**
     * 修改套餐
     * @param setmealDTO
     */
    @Transactional
     public void update(SetmealDTO setmealDTO){
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
      //1、修改套餐表，执行update
        setmealMapper.update(setmeal);
        //套餐id
        Long setmealId = setmealDTO.getId();
        //2、删除套餐和菜品的关联关系，操作setmeal_dish表
        setmealDishMapper.deleteBySetmealId(setmealId);
        List<SetmealDish> setmealDishes =setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
        //3、重新插入套餐和菜品的关联关系，操作setmeal_dish表，执行insert
        setmealDishMapper.insertBatch(setmealDishes);
     }
     public void startOrStop(Integer status,Long id){
        //起售套餐时，判断套餐内是否有停售菜品，有停售菜品提示"套餐内包含未启售卖菜品
         // ，无法起售"
         if (status == StatusConstant.ENABLE){

             List<Dish>dishList = dishMapper.getBySetmealId(id);
             if (dishList !=null && dishList.size()>0){
                 dishList.forEach(dish -> {
                     if (StatusConstant.ENABLE == dish.getStatus()){
                         throw new
                                 SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                     }
                 });
             }
         }
         Setmeal setmeal =
                 Setmeal.builder()
                         .id(id)
                         .status(status)
                         .build();
         setmealMapper.update(setmeal);
     }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
     public List<Setmeal> list(Setmeal setmeal){
        List<Setmeal> list =
                setmealMapper.list(setmeal);
             return list;
     }

}

